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United States Patent | 6,057,280 |
Huish ,   et al. | May 2, 2000 |
The invention includes compositions containing one or more .alpha.-sulfofatty acid esters, and methods for making and using the same. At least one .alpha.-sulfofatty acid ester is included in an inner portion. The invented composition can further include an outer portion which protects the .alpha.-sulfofatty acid ester from di-salt formation. The resulting composition improves the stability of the .alpha.-sulfofatty acid ester after manufacture, during shipping and storage, and in detergents. The invention further included detergents containing the invented composition, and methods of making such detergents.
Inventors: | Huish; Paul Danton (S.L.C., UT); Jensen; Laurie A. (Midvale, UT); Libe; Pule B. (Salt Lake City, UT) |
Assignee: | Huish Detergents, Inc. (Salt Lake City, UT) |
Appl. No.: | 195785 |
Filed: | November 19, 1998 |
Current U.S. Class: | 510/440; 446/447; 446/450 |
Intern'l Class: | C11D 017/00 |
Field of Search: | 510/351,352,357,298,383,426,427,428,425,422,424,440 560/147 |
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TABLE 1 ______________________________________ Percentage sMES in Detergent Time % Di-salt/Active - without outer portion ______________________________________ 9% sMES 192 days 60.3% 40% sMES 215 days 78.1% ______________________________________
TABLE 2 ______________________________________ % Di-salt/Active - % Di-salt/Active- Time without outer portion with outer portion ______________________________________ 0 0% 0% 8 days 0.7% 0% 21 days 30.3% 6.2% 28 days 42.8% 6.2% ______________________________________